7/5=10.5/b

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Solution for 7/5=10.5/b equation: 


D( b )

b = 0

b = 0

b = 0

b in (-oo:0) U (0:+oo)

7/5 = 10.5/b // - 10.5/b

7/5-(10.5/b) = 0

7/5-10.5*b^-1 = 0

-10.5*b^-1 = -7/5 // : -10.5

b^-1 = 0.13333333

-1 < 0

1/(b^1) = 0.13333333 // * b^1

1 = 0.13333333*b^1 // : 0.13333333

7.50000019 = b^1

b = 7.50000019

b = 7.50000019

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